Leaf-turning device



C. CIABOTTI.

LEAF TURNING DEVICE. APPLICATION men JUNE 21, 1919.

1 45 3 1 Patented June 29, 1920.

2 SHEETSSHEET I.

Ill

Ciro 01271201771 C. CIABOTTI.

LEAF TURNING DEVICE. APPLICATION FILED JUNE27, 1919.

1 345, 3 1 6. Patented June 29, 1920.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

onto OIABOTTI, orMILAN, ITALY.

LEAF-TURNING DEVICE.

Specification of Letters Patent. Patented June 29, 1920;

Application filed .Tune 27, 1919. Serial No. 307,372

Via Vincenzo Monti, Milan, Italy, have invented certain newandusefu'lImprovements in Leaf-TurningDevices, of which the following is aspecification.

This invention relates to apparatus for turning the leaves of a book, ofa musicscore and the like and it has for its object to provide a simpleandeiiicient appliance for reading desks,- music' racks and the like,whereby the leaves may be securely and rapidly turned over,'if desiredwithout a manual intervention ofthe reader or performer.

With this object in"view', the "invention consists broadly in'anappliance wherein a pulley or the like is arr'angedtofbe'rotated forexample by aid ofa pedal orof a handle and this pulley is operatively"connected with two rotary arms, the first arm being adapted to initiatethe"tu'rning-over of the ,leaf, while"the"second arm serves to completethis movement.

The invention will bedescribed with ref erence to the accompan indrawing which sho'ws,:by"way of example, one of its constructionalforms; it being understood that the details of construction as hereafterdescribed maybe modified in many ways without'departing from thespiritof the invention. I

In the drawings Figuresl and 1 are a front elevation of the ap aratus;

F igs. Q 'and 2 are a horizontal section just above the doumegmovepulley;

F igs' 3 'and 3 area horizontal section showing one of the arms and theleaf en! gaging" extension thereon.-

Figs. r ande am a horizontalsection' showing the other arm and thepneumatic means thereon for engaging a leaf,

Fig.5 hows a detail.

Referring to the drawing; the apparatus comprises a bo'x sh'aped bodyportion a which is secured to the shelfpreferably be ne'ath the boardprovidedtosupport'the book'or the like; or this box may be arranged toform itself theboek board. VVithin the box a there is provided at ornearits center api-n b which is rotatably mounted in the upper andlowerwallsof the box. This pin has secured on it a 'doublegroove pulley 0 ontowhich wind two flexible wires 03, d. The wire 03 connects with a Wire 6arranged to lead to a pedal or handle which is located at anyappropriate or desired point to allow the apparatus being readilyoperated by the reader or performer in the manner hereinafter described.The wire d is acted on by a spring 7 whichtends to rotate the pulley cin the opposite direction to the wire 6.

The pulley 0 has projecting from its lower face a pin 9 and from itsupper face an angularly bent pin it, these two pins being arranged invertical alinement one above the other. A disk 2' is loosely mounted onthe pin Z2 beneath the pulley o and is provided with a smallcircumferential slot adapted to be engaged by the pin 9. A second diskloosely mounted on the pin 3) above the pulley c and has acircumferential slot intended to be enteredby the upper pin it, thisslot being much longer than the slot in the disk i'and extendspreferably along half the circumference of the 'disk' j. It is thusevident that when thepulley is rotated in thedirection of the arrowshown in Fig. 2, a rotary motion will be imparted first of all to thedisk 2' throughthe pin 9 and after an appropriate interval of time tothe disk throughthe intervention of. the pin it in the manner hereafterset forth- A coiled spring c" serves to return the disk 2' into itsnormal position after it has been operated. I

An arm 70 is formed integrally with the correspondingly held apart by abracket member 0 which projects from the box a and is tapered toward itsforward end so as to have, for example, a triangular shape in section.

The disk j has formed integrally with it an arm 79 which is about halfas long as the arm 70. On the free end of this arm p'is rotatablymounted a bar 9 adapted to be lower end of the bar 9 so as to hold itnormally in a vertical position. A coiled spring 8 is connected by awire with the disk 7' which is normally prevented from rotating underthe action of this spring by aid of a pawl t engaging a tooth formed onthe disk 7'.

Both arms 79 and maybe made to telescope in order to permit theappliance being used with books of different width.

The apparatus works in the following way.

\Vhen the apparatus is at rest, the arm I: lies adjacent the box a andholds the funnel m of the rubber ball m against the marginal. rim of theright-hand leaf of the book, while the arm 79 is in the position shownin Fig. 3 where it is slightly turned outward from the shelf so that thebar 7 cannot interfere with the reading.

lVhen it is desired to turn aleaf, the reader or performer pulls thewire 6 by aid of the pedal or the handle so that the pulley c is causedto rotate and the pin to slide along the cooperating groove in the diskuntil it imparts a rotary motion to this disk and to the arm 70 which isthereby caused to move away from the shelf. During this re tary motionof the arm 70 the lower arms of the pincers n, a slide along the facesof the bracket 0 and approach each other so that the upper arms releasetheir grip on. the rubber ball on. The rubber ball is thus allowed toexpand and this produces a sucking action on the leaf which will therebybe caused to stick to the funnel m and be carried along by the arm is.On encountering the bar 9', the leaf carries this bar into itshorizontal position so as to be able to clear it. hen the leaf haspassed over the bar 9, the weight 1' returns the latter into itsvertical position. In the meantime the pin 71, has traveled along theslot in the disk 7' and will now have reached the pawl '15 which holdsthe disk in its inoperative position. The pin it raises the pawl 25 andthe spring 8 now rotates the disk j together with the arm 7) so that thebar 9 tears the leaf off from the funnel m and carries it with a jerk tothe left-hand side of the book. The wire 0 will now be released and allthe parts are returned into their normal position through the action ofthe respective springs.

What I claim is:

1. In an apparatus of the type described, a box, a pulley rotatablymounted within the box, means to rotate the pulley, a first arm, anapertured rubber ball supported from this first arm, means on the leverto grasp and compress the rubber ball, means to release the grip on therubber ball, a second arm, an upstanding extension on this lever, andmeans on the pulley to operate first the first named arm and thereafterthe second named arm to turn the leaf.

2. In an apparatus of the type described, a box, a pulley rotatablymounted within this box, means to rotate the pulley from the outside, afirst arm, an apertured rubber ball supported from this first arm, apair of pincers adapted to compress the rubber ball or to allow it toexpand, a tapered bracket engaged by the pincers so as to cause them toopen or close when the arm is rotated, a second lever, an upstandingrotary extension on this arm, means on the pulley to rotate first theone and thereafter the other arm, and means to return the arms intotheir inoperative position.

3. In an apparatus of the type described, a box, a pulley rotatablymounted within the box; means to rotate the pulley, an. arm to initiatethe movement of the leaf, an arm to complete the movement of the leaf,means to operate the arms from the pulley, these means comprising a diskabove the pulley, a disk below the pulley, these disks being looselymounted on the pulley shaft and each formed integrally with therespective arm, a pin projecting above and below from the pulley andengaging a circumferential slot within the respective disk, these slotshaving different lengths so that the disks and the arms will be operatedat successive times.

4:. In an apparatus of the type described,

a box, a pulley rotatably mounted within the box, means to rotate thepulley from the outside, a disk loosely mounted on the pulley shaftabove the pulley, a disk loosely mounted on the pulley shaft beneath thepulley, pins on the pulley to engage circumferential slots in the disksso as to operate same, these slots having different lengths, arms formedintegrally with the respective disks, an automatically operated suctionlevice on one of the arms to initiate the movement of the leaf, acounterweighted extension on the second arm to complete the movement ofthe leaf, a latch to hold the hub of this second arm in inoperativeposition, a coiled spring to rotate the disk and its arm when the diskhas been disengaged from the latch by the pin on the pulley, and meansto return the parts into their normal position.

5. A leaf turning device comprising a casing,.a shaft mounted in thecasing, a pulley rotatably mounted thereon, means for rotatin thepulley, disks mounted on the shaft ad acent and on either side of thepulley, arms on the disks, suction means on one arm for gripping a leaf,an extension on the other arm for engaging the leaf, and connectionsbetween the oulley and the disks to rotate the disks and the arms.

6. A leaf turning device comprising pneumatic means for first gripping aleaf to par tially turn same, means for subsequently engaging thepartially turned leaf, to complete the turning of same, and common meansfor operating the pneumatic means and the subseapuent engaging means.

A leaf turning device comprising pneumatic means for gripping a leafconsisting of a bulb having an annular extension at one end and a holecommunicating with the interior of the bulb, means for compressing thebulb, an arm for subsequently engaging the leaf, and common means foroperating the pneumatic means to grip and partially turn the leaf andsubsequently operate the arm to cause same to engage the leaf tocomplete the turning operation.

8. A leaf turning device comprising a casing, arms rotatably mountedtherein, pneumatic means on one arm for gripping a leaf, adapted to turnthe leaf a determined dis tance, means on the other arm for engaging theleaf, adapted to complete the turning thereof, and means for rotatingthe arms.

9. A leaf turning device comprising a casing, arms rotatably mountedtherein, means for rotating the arms, pneumatic means on one armconsisting of a bulb having an annular flange at one end thereof and anopening therein, adapted to grip the face of a leaf, means on the armfor compressing the bulb, and an overhalanceed pivoted extension on theother arm, adapted to engage the back of a leaf whereby the pneumaticmeans is operated to first grip a leaf and rotate it a predetermineddistance to pass over the pivoted extension, When said extension Willthen engage the back of the leaf and be rotated to complete the turningthereof.

In testimony whereof I have signed my name in the presence of twosubscribing Witnesses at Milan this fifth day of June, 1919.

CIRO CIABOTTI. Witnesses:

' LAMBERTOVI LUGI,

MERLO CARLO.

